Question: What is the safety classification of zinc chloride, which has an NFPA rating in Health of 3?
Paraphrase: Tell me the safety classification of zinc chloride, with a 3 NFPA rating in Health
SPARQL (Wikidata): SELECT ?obj WHERE { wd:Q204714 p:P4952 ?s . ?s ps:P4952 ?obj . ?s pq:P993 ?x filter(contains(?x , '3')) }